Jeffrey Salazar
The keto diet is a low-carb, high-fat diet that has gained popularity in recent years due to its effectiveness in weight loss and improved health markers. However, those who follow this diet and want to exercise may wonder how to fuel their bodies without carb loading. It is a common misconception that carbohydrates are the only fuel source for the body during exercise. Recent studies suggest that a higher-fat, low-carb diet may yield better results for pre- and post-workout meals. When following a keto diet, the body's primary energy source shifts from glucose to ketones, allowing it to tap into stored body fat for fuel. This means that even without eating before a workout, the body can still perform effectively while in a state of ketosis. However, some people may prefer to eat a keto-friendly meal or snack before exercising to increase their energy levels. Pre-workout meals or snacks should ideally include a balance of protein, healthy fats, and a small amount of carbohydrates. Examples of keto-friendly pre-workout foods include avocados, nuts, fatty fish, keto-friendly protein bars, and shakes. Caffeine is also recommended as it can increase energy levels and focus. Ultimately, the best approach is to listen to your body and adjust your pre-workout nutrition accordingly.
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What You'll Learn
You don't need carbs for energy
The ketogenic diet is a low-carb, high-fat diet that causes weight loss and provides numerous health benefits. Carbohydrates are the body's preferred source of energy, but on a strict ketogenic diet, only 5% to 10% of energy intake is from carbohydrates. The reduction of carbohydrates puts the body into a metabolic state called ketosis, where the body uses fat for fuel instead of carbohydrates. In this state, the body becomes very efficient at burning fat for energy and can tap into stored body fat for workout fuel.
When deciding what to eat before a workout, it is important to listen to your body and pay attention to its specific needs. Timing is also crucial, with most people finding that eating 30 minutes to three hours before exercise is best. On a keto diet, you don't need to eat before a workout, and you can exercise on an empty stomach without sacrificing energy or performance. In fact, studies have shown that ketogenic dieters burn over twice as much fat during exercise compared to those fuelling themselves with carbohydrates.
If you do choose to eat before a workout, it is important to include protein and fat in your pre-workout meal. Protein gives your muscles the amino acids they need to perform, repair, and build muscle, while fat is your primary energy source on a ketogenic diet. Electrolytes are also important on a keto diet, as they help maintain optimal fluid balance, muscle function, energy production, and hydration.
While it was long believed that carbohydrates were critical for workout energy, recent research has shown that this is not the case. Carbohydrates are not the only fuel source the body can use during and after exercise, and a higher-fat, low-carb diet may be more optimal for pre- and post-workout meals. This is why many athletes and people with active lifestyles are choosing to follow a keto or low-carb diet.
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Eat protein and amino acids
When following a keto diet, it is important to eat the right foods before a workout to fuel your body and improve physical performance. Eating protein before a workout is crucial because it gives your body the amino acids it needs to build muscle and repair muscle fibres broken down during exercise.
Protein is essential for muscle repair and growth, making it crucial for any workout routine. Good sources of lean protein include chicken breast, fish, eggs, and tofu. If you're short on time or prefer a lighter snack before your workout, a protein shake, hard-boiled eggs, or a small serving of full-fat Greek yoghurt are all good options. Sugar-free cottage cheese and Greek yoghurt are also great sources of casein protein, which is slowly digested and provides a steady stream of amino acids to your muscles during and after exercise.
If you're looking for a more substantial pre-workout meal, you can include a combination of healthy fats, moderate protein, and some carbohydrates. Avocado, nuts, and seeds are excellent sources of healthy fats that provide sustained energy. A small serving of carbohydrates, such as half a banana, a handful of berries, or half a sweet potato, can give you an extra energy boost without throwing off your macros.
Timing is also crucial when planning your pre-workout meals. Most people find that eating 30 minutes to three hours before exercising is best, but you may need to adjust this window depending on your personal preference and how your body responds. It's important to listen to your body and experiment with different pre-workout snacks to find what works best for you.
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Consume healthy fats
Consuming healthy fats is essential when following a keto diet, as your body relies on fats and ketones for energy. Here are some tips for consuming healthy fats before exercising while on a keto diet:
Choose the Right Types of Fat
Include fats that are easily digestible and provide a quick and efficient energy source. Medium-chain triglycerides (MCTs), found in foods like coconut oil, are a great choice. MCTs are rapidly converted into ketones, providing a steady energy supply for your muscles and brain. Avocados, nuts, and fatty fish like salmon and tuna are also excellent sources of healthy fats. These fats can help combat inflammation and oxidative stress caused by exercise, reducing muscle soreness and speeding up recovery.
Consider a Keto-Friendly Shake
A keto-friendly shake or smoothie with MCT oil or powder can be an excellent pre-workout option. It provides a fast-digesting source of protein and healthy fats, ensuring your body has the energy it needs without feeling too full to exercise. You can also add a scoop of MCT oil powder to your coffee for a caffeine boost.
Timing is Important
Allow sufficient time between consuming healthy fats and working out. Aim for 1 to 3 hours to give your body time to digest the fats and convert them into energy. This timing can enhance your workout performance and ensure you have the stamina to power through your routine.
Know Your Macronutrient Needs
Remember that not all keto diets are the same. The standard keto diet recommends consuming 75% fat, while the cyclical keto diet allows for higher carb intake on certain days to fuel workouts and replenish muscle glycogen stores. Adjust your fat intake according to the specific guidelines of your chosen keto diet plan.
Combine with Moderate Protein
In addition to healthy fats, include a moderate amount of protein in your pre-workout meals. Protein provides your muscles with essential amino acids, aiding in performance, repair, and muscle building. Examples of keto-friendly protein sources include sugar-free cottage cheese, Greek yogurt, and low-carb jerky.
By incorporating these tips into your pre-workout routine, you can ensure you're consuming healthy fats in a way that supports your keto diet and enhances your exercise performance.
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Timing is key
If you're working out in the morning, your body's glycogen stores (glucose/sugar reserves) are depleted after your overnight fast. This means that when you exercise, your body taps into your fat stores for energy. However, if you're experiencing dizzy spells, sluggishness, or nausea during your workout, your body may not be fat-adapted yet and needs some pre-workout fuel.
It is generally recommended to allow about 1 to 3 hours between eating and working out. This gives your body time to digest the food and convert it into energy, enhancing your workout performance. The closer you are to exercising, the lighter your pre-workout snack should be. For example, if you're about to start exercising, a keto bar or some mixed berries are good options. If you have more time, you can opt for a larger pre-workout meal, such as a keto-friendly sandwich or a full English breakfast.
If you're looking for an extra boost, caffeine taken 15 minutes to an hour and a half before exercise can increase performance, help burn fat, and reduce fatigue.
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Electrolytes are essential
Electrolytes are minerals within your body that aid in cellular and organ function. They are essential for a number of bodily functions and are necessary for survival. Electrolytes are vital for the proper functioning of your body, which is why you need to keep them within their normal levels. Low or high electrolyte levels can result in problems ranging from headaches to muscle cramps to convulsions.
The most important functions of electrolytes are to maintain hydration and acidity levels in the body, as well as help maintain muscle and nerve function. Sodium, for instance, is one of the most important electrolytes in the body. It plays a vital role in overall health and is needed to help the body function properly. The sodium ion, for example, plays a role in the activation of muscle contraction machinery.
When transitioning to a keto diet, you can experience a decrease in electrolytes due to carb restriction leading to lower insulin levels. People who are keto-adapted may also experience electrolyte losses as a result of excessive sweating, especially if they lead an active lifestyle, and are not getting enough electrolytes in their diet. Exercise can also cause fluid and electrolyte loss, mainly through prolonged exercise and exercising in hot weather.
If you are transitioning to a very low-carb diet, exercising frequently, or experiencing an illness, you may need to consider taking electrolyte supplements.
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Frequently asked questions
It depends on your preference and the type of exercise. Some people prefer to work out on an empty stomach, while others opt for a small snack or a full meal. If you're doing cardio, you can exercise without eating beforehand. However, if you're lifting weights, it's recommended to eat 1-1.5 hours before your workout.
It's important to fuel your body with the right nutrients, such as protein, healthy fats, and a small amount of carbohydrates. Examples include avocados, nuts, keto-friendly protein bars or shakes, fatty fish, and vegetables with hummus. Caffeine before a workout can also boost your energy levels.
The amount you eat depends on the intensity of your workout. For a monster workout, opt for a larger pre-workout meal, giving your body ample time to digest. For lighter exercises, a small snack should suffice.
It's generally recommended to wait about 1 to 3 hours between eating and working out to allow your body to digest the food and convert it into energy. However, individual preferences may vary, so experiment to find what works best for you.
